added maven repository cache for faster execution (devonfw#1625)

* added maven repository cache for faster execution

* added maven repository cache for faster execution

* removed unnecessary else case

Author: EduardKrieger

cobigen/cobigen-core-api/src/main/java/com/devonfw/cobigen/api/util/MavenUtil.java

@@ -40,6 +40,9 @@ public class MavenUtil {
   /** Logger instance. */
   private static final Logger LOG = LoggerFactory.getLogger(MavenUtil.class);
 
+  /** Maven repository */
+  private static Path MAVEN_REPO = null;
+
   /**
    * Executes a Maven class path build command which will download all the transitive dependencies needed for the CLI
    *
@@ -225,10 +228,15 @@ public static String generatePomFileHash(Path pomFile, Path m2RepoPath) {
    */
   public static Path determineMavenRepositoryPath() {
 
+    if (MAVEN_REPO != null) {
+      LOG.debug("Using {} as cached maven repository path.", MAVEN_REPO);
+      return MAVEN_REPO;
+    }
     Path m2Repo = Paths
         .get(runCommand(SystemUtils.getUserHome().toPath(), Lists.newArrayList(SystemUtil.determineMvnPath().toString(),
             "help:evaluate", "-Dexpression=settings.localRepository", "-DforceStdout")));
     LOG.debug("Determined {} as maven repository path.", m2Repo);
+    MAVEN_REPO = m2Repo;
     return m2Repo;
   }